OBGYN is ACGME accredited at AMC. Peds is only accredited at Dekalb Medical Center.
If at the time of the rotation (not where Ross says which hospital you are supposedly going to) the doctor is affiliated with those hospitals, then you are good.

As for what happened in the OR... no need to spread rumors. But from what i heard, it wasn't the students fault, they were following orders and a nurse who saw thought otherwise.